Conventional chassis chassis punch to open a large hole to the (aluminum / iron plate), hand two blur, and drilling around at reamer or small diameter (about 3mm) drill, milling cutters, with a file, etc.
Although very labor and time have opened a large hole was the base at stake, when you use the Yusaku Seiki manual puncher, you cage your happy simple and clean can be drilled very.
This purchase fiddling instead of teeth φ16mm we use for electric drill pilot holes to punch the φ45 owns at home because of 16mm to easily increase it not only can be used up to max10mm.
The improvements hope you think grateful to be able to be used in the φ10 shaft diameter for φ45.

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All of the products MonotaRO Singapore offers are subject to Japanese local laws, regulations, and certification standards.
Please make sure that it may or may not meet requirements of your country and/or international organizations,
including but not limited to, UL Certification, China Compulsory Certificate system, and Halal.
MonotaRO Co.,Ltd. Hyogo Public Safety Commission No.631330800020